Home / 156,953.55-235,430.33-78,221.55

Finding the Fourth Proportional to 156,953.55, 235,430.33 and 78,221.55

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Solution

The fourth proportional to 156,953.55, 235,430.33 and 78,221.55 is: 117,332.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,953.55 : 235,430.33 = 78,221.55 : x
  2. Step 2: Convert to fraction form
    156,953.55/235,430.33 = 78,221.55/x
  3. Step 3: Cross multiply
    156,953.55x = 235,430.33 × 78,221.55
  4. Step 4: Simplify right side
    156,953.55x = 18,415,724,938.50
  5. Step 5: Solve for x
    x = 18,415,724,938.50/156,953.55
  6. Step 6: Final answer
    x = 117,332.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.